A facial recognition camera is used at a British Airways international gate at Florida's Orlando International Airport. American Airlines has been using facial recognition at Los Angeles International Airport, and Delta Air Lines began deploying it at LAX on this month. (Ricardo Ramirez Buxeda/Orlando Sentinel/TNS)

LOS ANGELES — Delta Air Lines began using facial recognition technology at Los Angeles International Airport on Friday, installing cameras to identify passengers at one boarding gate, with plans to add more.

The move by the Atlanta-based carrier comes as a coalition of progressive groups, including Greenpeace, MoveOn and the Electronic Privacy Information Center, called for a federal ban of the use of facial recognition technology by law enforcement agencies.

Critics of the technology say the images collected by the cameras can be stored and used to violate the privacy of innocent people, and that the technology is more likely to misidentify women and people of color than white men.

A spokeswoman for the coalition said the groups also oppose the use of the technology by airlines.

"There is no real oversight for how a private corporation can use our biometric information once they've collected it," said Evan Greer, deputy director of Fight for the Future, a nonprofit group opposed to online censorship and a member of the coalition. "We've already seen high-profile data breaches where airport facial recognition databases were hacked and exposed."

Over the last 12 months, LAX has been a testing ground for facial recognition technology by various airlines and federal agencies.

U.S. Customs and Border Protection began testing facial recognition technology in a 30-day trial last summer, calling the trial period a success.

"Although CBP has a very thorough and robust biographic vetting system, biometrics provides additional assurance and confirmation of identity," the agency said in a statement.

American Airlines indefinitely extended a 90-day test period for use of facial recognition technology that was first installed at LAX last winter. The Transportation Security Administration launched a three-week test last year of facial recognition cameras, but a TSA representative could not be reached to describe the results of the test.

LAX kicked off a pilot program in January of facial recognition technology at three boarding gates used by several international carriers at Tom Bradley International Terminal. The testing is ongoing, airport officials said.

Delta's deployment Friday of facial recognition technology in Terminal 2 won't be a test. The airline is permanently installing the cameras, planning an expansion to 13 of its 21 boarding gates.

The cameras use facial recognition technology to match the faces of departing travelers with images and names already collected by Customs and Border Patrol and other government agencies. If the name that corresponds to the image captured by the cameras is on the flight manifest, the passenger is allowed to board.

The technology can save an average of nine minutes when boarding a wide-body aircraft, or two seconds per customer when compared with traditional boarding, according to Delta.

The carrier defended the use of the technology, saying the airline does not store the images taken at the checkpoint and gives passengers the option to instead have a gate agent visually confirm the passengers' identity.

"Maintaining the privacy and security of customer information is a responsibility Delta takes very seriously," Delta spokeswoman Liz Savadelis said

Delta officials say that when Customs and Border Protection has tested facial recognition technology at other airports, fewer than 2% of passengers have opted out of using it.

An audit released last year by the Department of Homeland Security's Office of Inspector General found that pilot programs to test the technology at nine airports had a combined match rate of only 85% — below the agency's goal of a 97% to 100% match rate.

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